Coating processes – With post-treatment of coating or coating material – Heating or drying
Reexamination Certificate
2011-04-26
2011-04-26
Cameron, Erma (Department: 1715)
Coating processes
With post-treatment of coating or coating material
Heating or drying
C427S385500
Reexamination Certificate
active
07931942
ABSTRACT:
The present invention provides a process for making a filled fluoropolymer bearing comprising providing an aqueous fluoropolymer dispersion comprising fluoropolymer particles and anionic polyelectrolyte dispersing agent in an amount sufficient for stabilization. The dispersion contains less than about 300 ppm fluorosurfactant based on the weight of the dispersion. The dispersion is coagulated to make a mush and a bearing filler is added to the dispersion prior to or after making the mush. The mush containing bearing filler is applied onto a bearing substrate to produce a coated substrate which is sintered and formed into a bearing.
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Kirk Othmer, “Encyclopedia of Chemical Technology”, polymerization mechanisms and processes, III ed., vol. 18, pp. 720-744.
Cavanaugh Robert John
Jones Clay Woodward
Cameron Erma
E. I. Du Pont de Nemours and Company
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